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/**

*

* AJAX Functions

*

* This code is protected under GNU LGPL License

*

* @author Jorge Machado

* @date April 2008

**/

/**

 * Starts XMLHTTP Ajax request

 *

 * @author Jorge Machado

 * @date April 2008

 *

 * params:

 * @params HTTP GET Parameters for query string

 * @xmlHttpRequest request

 * @id target element

 * @stateChanged target function

 * @innerPhrase to put while waiting for response

 * @navjsp requested jsp

 */

function startRequest(xmlHttpRequest,params,id,stateChanged,innerPhrase,navjsp)

{

    if(innerPhrase != '')

        getObjectById(id).innerHTML = innerPhrase;

    if (xmlHttpRequest==null)

    {

        alert ("Browser does not support HTTP Request");

        return;

    }

    var url= navjsp;

    if(params != null && params.length > 0)

    {

        url=url+"?"+ params;

        url=url+"&sid="+Math.random();

    }

    else

    {

        url=url+"?sid="+Math.random();

    }

    xmlHttpRequest.onreadystatechange=stateChanged;

    xmlHttpRequest.open("GET",url,true);

    xmlHttpRequest.send(null);

}

/**

 * Return an HTML element given ID

 *

 * @author Jorge Machado

 * @date April 2008

 *

 * params:

 * @objectId required object

 */

function getObjectById(objectId)

{

    // cross-browser function to get an object's style object given its id

    try

    {

        if(document.getElementById && document.getElementById(objectId))

        {

            // W3C DOM

            return document.getElementById(objectId);

        }

        else if (document.all(objectId))

        {

            // MSIE 4 DOM

            return document.all(objectId);

        }

        else if (document.layers && document.layers[objectId])

        {

            // NN 4 DOM.. note: this won't find nested layers

            return document.layers[objectId];

        }

        else

        {

            return false;

        }

    }

    catch(e)

    {

        return false;

    }

}

function hide(id,showId)

{

    getObjectById(id).style.visibility='hidden';

    getObjectById(id).style.position='absolute';

    getObjectById(showId).style.visibility='visible';

    getObjectById(showId).style.position='relative';

}

function show(id,hideId)

{

    getObjectById(id).style.visibility='visible';

    getObjectById(id).style.position='relative';

    getObjectById(hideId).style.visibility='hidden';

    getObjectById(hideId).style.position='absolute';

}

function show(id)

{

    getObjectById(id).style.visibility='visible';

    getObjectById(id).style.position='relative';

}

function showOrHide(id)

{

    if(getObjectById(id).style.visibility == 'hidden')

    {

        show(id);

    }

    else

        hide(id);

}

function hide(id)

{

    getObjectById(id).style.visibility='hidden';

    getObjectById(id).style.position='absolute';

}

/**

 * Creates a new XmlHttpObject

 * @author Jorge Machado

 * @date April 2008

 *

 * params:

 * @handler target xmlHttpObject function

 */

function GetXmlHttpObject(handler)

{

    var objXmlHttp = null;

    if (navigator.userAgent.indexOf("Opera")>=0)

    {

        alert("This example doesn't work in Opera") ;

        return objXmlHttp;

    }

    if (navigator.userAgent.indexOf("MSIE")>=0)

    {

        var strName="Msxml2.XMLHTTP";

        if (navigator.appVersion.indexOf("MSIE 5.5")>=0)

        {

            strName="Microsoft.XMLHTTP";

        }

        try

        {

            objXmlHttp=new ActiveXObject(strName);

            objXmlHttp.onreadystatechange=handler ;

            return objXmlHttp;

        }

        catch(e)

        {

            alert("Error. Scripting for ActiveX might be disabled") ;

            return objXmlHttp;

        }

    }

    if (navigator.userAgent.indexOf("Mozilla")>=0)

    {

        objXmlHttp=new XMLHttpRequest();

        objXmlHttp.onload=handler;

        objXmlHttp.onerror=handler;

        return objXmlHttp;

    }

}

/***************************************************

 TopFlashNews

***************************************************/

var xmlHttpTopFlashNews;

var getFlashNewsTimeout;

var getFlashNewsJsp;

function getFlashNews(jsp,timeout)

{

    getFlashNewsJsp = jsp;

    getFlashNewsTimeout = timeout;

    getFlashNewsTimeoutCall();

}

function getFlashNewsTimeoutCall()

{

    xmlHttpTopFlashNews=GetXmlHttpObject(stateChangedGetFlashNews);

    startRequest(xmlHttpTopFlashNews,"","flashTopNews",stateChangedGetFlashNews,"",getFlashNewsJsp)

}

function stateChangedGetFlashNews()

{

    if (xmlHttpTopFlashNews.readyState==4 || xmlHttpTopFlashNews.readyState=="complete")

    {

        getObjectById("flashTopNews").innerHTML=xmlHttpTopFlashNews.responseText;

        setTimeout(getFlashNewsTimeoutCall,getFlashNewsTimeout);

    }

}

/***************************************************

 Search

***************************************************/

var xmlHttpSearch;

var searchResultsDiv;

function searchCall(div,query,searchType,page,module,action)

{

    searchResultsDiv = div;

    xmlHttpSearch=GetXmlHttpObject(stateChangedSearchCall);

    startRequest(xmlHttpSearch,"dispatch=searchModule&query=" + query + "&searchType=" + searchType + "&page=" + page + "&module=" + module,"",stateChangedSearchCall,"",action);

}

function stateChangedSearchCall()

{

    if (xmlHttpSearch.readyState==4 || xmlHttpSearch.readyState=="complete")

    {

        getObjectById(searchResultsDiv).innerHTML=xmlHttpSearch.responseText;

    }

}

/***************************************************

 Pop

***************************************************/

var xmlHttpPop;

var popDiv;

function loadPop(div,action)

{

    popDiv = div;

    xmlHttpPop=GetXmlHttpObject(stateChangedPopCall);

    startRequest(xmlHttpPop,"","",stateChangedPopCall,"",action);

}

function stateChangedPopCall()

{

    if (xmlHttpPop.readyState==4 || xmlHttpPop.readyState=="complete")

    {

        getObjectById(popDiv).innerHTML=xmlHttpPop.responseText;

    }

}